The circumference of a circle is given by the formula $\displaystyle{C}={2}\pi{r}\usepackage{cmbright}\Huge\$ , with $\displaystyle\pi\approx{3.14}\usepackage{cmbright}\Huge\$ . In this circle, $\displaystyle{r}={75}\usepackage{cmbright}\Huge\$ , so:

$\displaystyle{C}={2}\pi\cdot{75}\approx{2}\cdot{3.14}\cdot{75}={471}\usepackage{cmbright}\Huge\$

The approximate circumference of the circle is 471 yards.